64g Optical Calcite Freeform TC2139 carving is composed of Iron Sulfide

is composed of Iron Sulfide

Weight: 140 grams

Weight: 245 grams

This Lemurian crystal has a self-healed terminated bottom

This piece fades from pink to a faint blue toward the termination

64g Optical Calcite Freeform TC2139 carving is composed of Iron Sulfide64g Optical Calcite Freeform Approx. Dimensions: 1. 25x1x2. 25 inches Approx. Weight: 64 grams Locality: Maharashtra, India Optical calcite is also referred to as Iceland Spar because of its first discovery in Eskifjord, Iceland. It is typically colorless, and exhibits the optical phenomenon of double refraction where an object viewed through the calcite will appear doubled. Double refraction, or birefraction, is also called birefringence and is also